Carbureter.



PATENTED FEB. 27, 1906.

E. B. ADAMS. GABBURETER. APPLJSOATION FILED 4PB.10,1906.

lARL E. ADAMS, OF BATTLE GREEK, MICHIGAN.

CARBURETER.

Specification of Letters Patent. Application filed April 10, 1905. Serial No. 254,705.

Patented Feb. 27, 1906.

1'11 (11/ [cl/.0711. it TH/I'I/Z/ concern:

Be it known that I, EARL E. ADAMS, a citizen of the United States, residing at Battle clear, and exact description thereof, such as will enable others skilled in the art to which apn rtams to make and use-the same.

This invention relates to carburetors for gas-engines; and the Ob ect of this invention a is to provide a device of its class that will be symmetrical and tasty in design, simple and inexpensive in construction, and effective and reliable in operation: and it more particularly relates to carbureters for use on marine engines, where the center of gravity in the gasolene-supply thereto will not materially vary by the tilting of the engine through the rock of the boat. However, the same may be readily attached to any of the ordinary portable gasolene-engines to the best of satisfaction.

Other objects and advantages will appear and the features of construction and peculiar cofnbination of parts will be first described and then specifically pointed out in the appended claims, reference being had to the accompanying drawings, in which Figure l represents a vertical cross-section of my improved carburetor with the air-passages open, and shows the position of the vaporizing-spray nozzle in relation thereto. Fig.

2 is a vertical cross-section, quarter-angular to Fig. 1, taken through the air-inlet and vaporizing-outlet and shows the float feed-valve. Fig. 3 is across-section of Fig. 1 on the line a: w; and Fig. 4 is a cross-section of Fig. 1 on the line 2 z, showin the shell A on] In the drawings Tike marks of re erence refer to corresponding parts throughout the different views.

A represents the shell or body portion'to my improved carburetor, and by preference the ,same is round with an indrawn bottom portion, as shown... Connecting with and orming part of the outer shell by means of a web B a secondary or inner shell O is provided. This shell has two compartments or chambers, the one located above the other This diaphragm has an opening-2, the central part thereof providing for the reception of the stand-pi e 10. The upper or vaporizing chamberh as an exhaust portor orifice 3 com- I niunicative with the engine proper, the lower chamber communicating with the atmosphere through the medium of an orifice 4, both of said orifices leading through the web B of the carbureter. Within the bottom of the lower chamber a small waste-tube 5 is provided. This tube leads to the outside of the carburetor, and its object is to prevent any accumulation of sediment or overflow accumulating within said chamber. This tube by preference is introduced within the mold and cast solidly within the carbureter. The indrawn portion of the bottom of the outer shell forms a. trap within which a s(.-rewplug 6 is introduced, and mounting the top of the carbureter a cap or cover I), having a central circular opening and a threaded depending outer flange, is provided, the flange of the cover being received by a threaded outer extremity of'the shell A, as shown.

Between the outer and inner shells of the carbureter a chamber or reservoir E is formed. This chamber is the intermediate fluid or gasolene holding receptacle between the supply-tank and the engine, and its supply is controlled by means of a float 7, through which the stem of a vertical operating tapering valve 8 is provided. An opening 9, formed in the bottom of outer shell to the carbureter and within which the valve 8 is adapted to play, provides a means for conis provided with a central opening, the bottom of which communicates with the gasolene-r'eservoir E, while its upper extremity is threaded and fitted with a needle-valve 11 of the usual construction.

At a point slightly above theorifice 2 in the diaphragm 1 and opening within an atomizing chamber or valve F'the stand-pipe 10 is supplied with a spray-nozzle 12, whose mouth is upward, as shown. The valve F fits snugly and its walls are of a length extending from the diaphragml to a point flush with the upper end of the shell C, within which it is fitted. An orifice 13, very like in size and shape to the orifice 2 in the diaphragm 1, is

made in the bottom thereof, and at the top of this chamber an externally-threaded neck 14 is provided, having a central hole through which the stand-pipe 10 1sadaptedto fit.

with the top of the valve-chamber F, and

through this collar the neck of said valve is adapted to fit. Encircling the upper end of the neck 10 to said valve-chamber a threaded jam-ring 18 is run and is adapted to be screwed down to impinge the collar 17 afore said.

Mounted near the upper threaded extrem ity of the needle-valve 11 a lever 19 is fitted. This lever forms a yoke at its outer end and engages the throttle controlling lever G.

The opposite end of this lever is slotted and is made to impress the needle-valve by means of a set-screw 20 passing through the slotted extremity, and at the upper extremity of the needle-valve a hand-wheel 22 is provided.

Between the lever 19 and the neck 10 of the valve-chamber F a heavy coil-spring 21 is fitted. The object of this spring is to keep the carburetin -chamber F closely seated upon the diaphragm 1 of the inner shell C.

The float 7 may be made of any suitable material for the purpose,'.as a pneumatic chamber or cork, the latter answering well for the purpose. That the same may be made to actuate the suppl -valve 8' accurately under all conditions, provide a guide 23, through which the upper extremity of valve-stem may play.

The operation of my improved carbureter in the main will have been apparent from the foregoing description. i It 1s desirable that the exit or opening 3 of the carbureter be attached as close to the intake-port of the -engine as possible, for the-reason that quicker .actibn will be derived from the gases generated. The supply of gasolene isthence con- 5.

nected to the 0 ning 9, whence the same will rise in the c mber E and lift the float 7 until the valve 8 forms a seat and prevents the same from risin higher than a predetermined. level below the spray-nozzle 12. The

lever G is connected to a throttle-lever or diintake 2, respectively, by which means the vacuum thus formed by the engine-piston will draw gasolene-vapor from the valvechamber F. The mixture having been prop erly established, the screw 20 in the lever 19' is set, and so also the jam-ring to lock the carburcting chamber or valve F and the throttle-levertogether, the oscillating of the throttle-lever controlling both the supply of air and gas'mixture to the engine, also the quantity of gasolene to be vaporized.

It will be seen that I have provided a carbureter both tasty in design and also very simple, symmetrical, and compact. The 7 vaporizing-chamber being located centrally .trolled valve to suppl said reservoir, a central chamber-suspen ed within said -reser voir, adiaphragm having an opening separating said chamber into an upper and a lower compartment, an air-valve operative on and adapted to vary the opening in said diaphragm, a spray-nozzle opening upward in close proximity to said opening in the up- 9 percompartment, an exhaust-port to-sa1d compartment, an air-inlet to the lower coin:

partment, and means to control said valve and spray-nozzle, substantially as set forth. I

2. The combination ofan encircling gaso-' 1 lene-reservoir, a float-controlled taperin valve to supply said reservoir, a. centra chamber suspended within said reservoir, a stand-pipe leading from said gasolene-res'ervoir through the center of said chamber, a I

dia hragm having an opening separating sai chamber into an upper and a lower compartment, an air-valve operative on and adapted to vary the opening in said diaphra m, a spray-nozzle leading'from said 1 stan -pipe in close proximity to said'opening in the upper compartment, an exhaust-port insaid compartment, an air-inlet to the lowe compartment and means to control sai valve and spray-nozzle, substantially as set I forth.

3.='In a carbureter, the combination with an encircling gasol-ene-reservoir, and a floatcontrolled valve to supply saidreservoir, of a central chamber suspended within and form- 1 ing a part of said reservoir, said chamber being separated into an up er and a lower compartment by means 0 an apertured dia-- phragm, an air-inlet communicative with the ower compartment and an exhaust-port r leading from said upper compartment, a

valve operative on and adapted to open and close saidape'rtured diaphragm, means to actuate said valve,',a spray-nozzle communicae tive with said upper chamber at a point 1 above and in close proximity to the aperture in said diaphragm, a valve to control said spray, and a lever to control said valve, for the purpose set forth 4. In a carbureter, the combination with an'air-chamben'of a vaporizing-chamber, an air-passage connecting said chambers, a valveadapted to Vary the opening to said air-passage between said chambers, a standpipe leading through said ohambers,-a spraynozzle leading from said pipe and opening above said air-passage Within said vaporizin -chamber, an arm on said valve, a needleva ve in the stand-pipe, to control the gasforming fluid, a clamp carried by said needlevalve having a fixed connection to the valve controlling the opening between the vaporizing and air chambers, means located between said arm and said valve to hold the latter to its seat, a gasolene-reservoir encompassing said vaporizing and air chambers, a fioatcarrying a tapering valve to control the feedsupply to said reservoir, said stand-pipe communicating with said reservoirs, and an inletpipe communicating with said valve, substantially as and for the purpose set forth ass 3 comprising an open-top cylindrical bodv having an indrawn bottom provided with open-top chamber suspended within said reservoir and forming a part therewith by means of a uniting-web, an apertured diaphragm separating said chamber into an upper and a through said web from said upper compartment, a waste-tube leading from said lower compartmentthrough said reservoir, a st andpassing through said compartments, a spraynozzle leading from said stand-pipe and opening within said upper compartment, a valve to control said spray-nozzle, a valve operative on and adapted to vary the opening in said diaphragm, means to actuate both of said valves simultaneously, a cap to said reservoir, a float-controlled valve to supply said reservoir, and an inlet-pipe communicating with said float-valve, substantially as, and for the purpose set forth.

1 EARL E. ADAMS. Witnesses:

S, F. RUssELL,

5. In a carbureter, a gasolene-reservoir HENRY INGRAM.

a drainage-trap, a concentrically-disposed U lower compartment, an exhaust-port leading pipe communicative with said reservoir and 

